[PATCH] devfs: Remove devfs documentation from the kernel tree

Removes the Documentaiton/filesystems/devfs/ directory

Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

4 files changed, 0 insertions, 4041 deletions

diff --git a/Documentation/filesystems/devfs/ChangeLog b/Documentation/filesystems/devfs/ChangeLog
deleted file mode 100644
index e5aba5246d7..00000000000
--- a/Documentation/filesystems/devfs/ChangeLog
+++ /dev/null
@@ -1,1977 +0,0 @@
-/* -*- auto-fill -*-                                                         */
-===============================================================================
-Changes for patch v1
-
-- creation of devfs
-
-- modified miscellaneous character devices to support devfs
-===============================================================================
-Changes for patch v2
-
-- bug fix with manual inode creation
-===============================================================================
-Changes for patch v3
-
-- bugfixes
-
-- documentation improvements
-
-- created a couple of scripts (one to save&restore a devfs and the
-  other to set up compatibility symlinks)
-
-- devfs support for SCSI discs. New name format is: sd_hHcCiIlL
-===============================================================================
-Changes for patch v4
-
-- bugfix for the directory reading code
-
-- bugfix for compilation with kerneld
-
-- devfs support for generic hard discs
-
-- rationalisation of the various watchdog drivers
-===============================================================================
-Changes for patch v5
-
-- support for mounting directly from entries in the devfs (it doesn't
-  need to be mounted to do this), including the root filesystem.
-  Mounting of swap partitions also works. Hence, now if you set
-  CONFIG_DEVFS_ONLY to 'Y' then you won't be able to access your discs
-  via ordinary device nodes. Naturally, the default is 'N' so that you
-  can still use your old device nodes.  If you want to mount from devfs
-  entries, make sure you use: append = "root=/dev/sd_..." in your
-  lilo.conf. It seems LILO looks for the device number (major&minor)
-  and writes that into the kernel image :-( 
-
-- support for character memory devices (/dev/null, /dev/zero, /dev/full
-  and so on). Thanks to C. Scott Ananian <cananian@alumni.princeton.edu>
-===============================================================================
-Changes for patch v6
-
-- support for subdirectories
-
-- support for symbolic links (created by devfs_mk_symlink(), no
-  support yet for creation via symlink(2))
-
-- SCSI disc naming now cast in stone, with the format:
-  /dev/sd/c0b1t2u3	controller=0, bus=1, ID=2, LUN=3, whole disc
-  /dev/sd/c0b1t2u3p4	controller=0, bus=1, ID=2, LUN=3, 4th partition
-
-- loop devices now appear in devfs
-
-- tty devices, console, serial ports, etc. now appear in devfs
-  Thanks to C. Scott Ananian <cananian@alumni.princeton.edu>
-
-- bugs with mounting devfs-only devices now fixed
-===============================================================================
-Changes for patch v7
-
-- SCSI CD-ROMS, tapes and generic devices now appear in devfs
-===============================================================================
-Changes for patch v8
-
-- bugfix with no-rewind SCSI tapes
-
-- RAMDISCs now appear in devfs
-
-- better cleaning up of devfs entries created by various modules
-
-- interface change to <devfs_register>
-===============================================================================
-Changes for patch v9
-
-- the v8 patch was corrupted somehow, which would affect the patch for
-  linux/fs/filesystems.c
-  I've also fixed the v8 patch file on the WWW
-
-- MetaDevices (/dev/md*) should now appear in devfs
-===============================================================================
-Changes for patch v10
-
-- bugfix in meta device support for devfs
-
-- created this ChangeLog file
-
-- added devfs support to the floppy driver
-
-- added support for creating sockets in a devfs
-===============================================================================
-Changes for patch v11
-
-- added DEVFS_FL_HIDE_UNREG flag
-
-- incorporated better patch for ttyname() in libc 5.4.43 from H.J. Lu.
-
-- interface change to <devfs_mk_symlink>
-
-- support for creating symlinks with symlink(2)
-
-- parallel port printer (/dev/lp*) now appears in devfs
-===============================================================================
-Changes for patch v12
-
-- added inode check to <devfs_fill_file> function
-
-- improved devfs support when mounting from devfs
-
-- added call to <<release>> operation when removing swap areas on
-  devfs devices
-
-- increased NR_SUPER to 128 to support large numbers of devfs mounts
-  (for chroot(2) gaols)
-
-- fixed bug in SCSI disc support: was generating incorrect minors if
-  SCSI ID's did not start at 0 and increase by 1
-
-- support symlink traversal when mounting root
-===============================================================================
-Changes for patch v13
-
-- added devfs support to soundcard driver
-  Thanks to Eric Dumas <dumas@linux.eu.org> and
-  C. Scott Ananian <cananian@alumni.princeton.edu>
-
-- added devfs support to the joystick driver
-
-- loop driver now has it's own subdirectory "/dev/loop/"
-
-- created <devfs_get_flags> and <devfs_set_flags> functions
-
-- fix problem with SCSI disc compatibility names (sd{a,b,c,d,e,f})
-  which assumes ID's start at 0 and increase by 1. Also only create
-  devfs entries for SCSI disc partitions which actually exist
-  Show new names in partition check
-  Thanks to Jakub Jelinek <jj@sunsite.ms.mff.cuni.cz>
-===============================================================================
-Changes for patch v14
-
-- bug fix in floppy driver: would not compile without
-  CONFIG_DEVFS_FS='Y'
-  Thanks to Jurgen Botz <jbotz@nova.botz.org>
-
-- bug fix in loop driver
-  Thanks to C. Scott Ananian <cananian@alumni.princeton.edu>
-
-- do not create devfs entries for printers not configured
-  Thanks to C. Scott Ananian <cananian@alumni.princeton.edu>
-
-- do not create devfs entries for serial ports not present
-  Thanks to C. Scott Ananian <cananian@alumni.princeton.edu>
-
-- ensure <tty_register_devfs> is exported from tty_io.c
-  Thanks to C. Scott Ananian <cananian@alumni.princeton.edu>
-
-- allow unregistering of devfs symlink entries
-
-- fixed bug in SCSI disc naming introduced in last patch version
-===============================================================================
-Changes for patch v15
-
-- ported to kernel 2.1.81
-===============================================================================
-Changes for patch v16
-
-- created <devfs_set_symlink_destination> function
-
-- moved DEVFS_SUPER_MAGIC into header file
-
-- added DEVFS_FL_HIDE flag
-
-- created <devfs_get_maj_min>
-
-- created <devfs_get_handle_from_inode>
-
-- fixed bugs in searching by major&minor
-
-- changed interface to <devfs_unregister>, <devfs_fill_file> and
-  <devfs_find_handle>
-
-- fixed inode times when symlink created with symlink(2)
-
-- change tty driver to do auto-creation of devfs entries
-  Thanks to C. Scott Ananian <cananian@alumni.princeton.edu>
-
-- fixed bug in genhd.c: whole disc (non-SCSI) was not registered to
-  devfs
-
-- updated libc 5.4.43 patch for ttyname()
-===============================================================================
-Changes for patch v17
-
-- added CONFIG_DEVFS_TTY_COMPAT
-  Thanks to C. Scott Ananian <cananian@alumni.princeton.edu>
-
-- bugfix in devfs support for drivers/char/lp.c
-  Thanks to C. Scott Ananian <cananian@alumni.princeton.edu>
-
-- clean up serial driver so that PCMCIA devices unregister correctly
-  Thanks to C. Scott Ananian <cananian@alumni.princeton.edu>
-
-- fixed bug in genhd.c: whole disc (non-SCSI) was not registered to
-  devfs [was missing in patch v16]
-
-- updated libc 5.4.43 patch for ttyname() [was missing in patch v16]
-
-- all SCSI devices now registered in /dev/sg
-
-- support removal of devfs entries via unlink(2)
-===============================================================================
-Changes for patch v18
-
-- added floppy/?u720 floppy entry
-
-- fixed kerneld support for entries in devfs subdirectories
-
-- incorporated latest patch for ttyname() in libc 5.4.43 from H.J. Lu.
-===============================================================================
-Changes for patch v19
-
-- bug fix when looking up unregistered entries: kerneld was not called
-
-- fixes for kernel 2.1.86 (now requires 2.1.86)
-===============================================================================
-Changes for patch v20
-
-- only create available floppy entries
-  Thanks to Andrzej Krzysztofowicz <ankry@green.mif.pg.gda.pl>
-
-- new IDE naming scheme following SCSI format (i.e. /dev/id/c0b0t0u0p1
-  instead of /dev/hda1)
-  Thanks to Andrzej Krzysztofowicz <ankry@green.mif.pg.gda.pl>
-
-- new XT disc naming scheme following SCSI format (i.e. /dev/xd/c0t0p1
-  instead of /dev/xda1)
-  Thanks to Andrzej Krzysztofowicz <ankry@green.mif.pg.gda.pl>
-
-- new non-standard CD-ROM names (i.e. /dev/sbp/c#t#)
-  Thanks to Andrzej Krzysztofowicz <ankry@green.mif.pg.gda.pl>
-
-- allow symlink traversal when mounting the root filesystem
-
-- Create entries for MD devices at MD init
-  Thanks to Christophe Leroy <christophe.leroy5@capway.com>
-===============================================================================
-Changes for patch v21
-
-- ported to kernel 2.1.91
-===============================================================================
-Changes for patch v22
-
-- SCSI host number patch ("scsihosts=" kernel option)
-  Thanks to Andrzej Krzysztofowicz <ankry@green.mif.pg.gda.pl>
-===============================================================================
-Changes for patch v23
-
-- Fixed persistence bug with device numbers for manually created
-  device files
-
-- Fixed problem with recreating symlinks with different content
-
-- Added CONFIG_DEVFS_MOUNT (mount devfs on /dev at boot time)
-===============================================================================
-Changes for patch v24
-
-- Switched from CONFIG_KERNELD to CONFIG_KMOD: module autoloading
-  should now work again
-
-- Hide entries which are manually unlinked
-
-- Always invalidate devfs dentry cache when registering entries
-
-- Support removal of devfs directories via rmdir(2)
-
-- Ensure directories created by <devfs_mk_dir> are visible
-
-- Default no access for "other" for floppy device
-===============================================================================
-Changes for patch v25
-
-- Updates to CREDITS file and minor IDE numbering change
-  Thanks to Andrzej Krzysztofowicz <ankry@green.mif.pg.gda.pl>
-
-- Invalidate devfs dentry cache when making directories
-
-- Invalidate devfs dentry cache when removing entries
-
-- More informative message if root FS mount fails when devfs
-  configured
-
-- Fixed persistence bug with fifos
-===============================================================================
-Changes for patch v26
-
-- ported to kernel 2.1.97
-
-- Changed serial directory from "/dev/serial" to "/dev/tts" and
-  "/dev/consoles" to "/dev/vc" to be more friendly to new procps
-===============================================================================
-Changes for patch v27
-
-- Added support for IDE4 and IDE5
-  Thanks to Andrzej Krzysztofowicz <ankry@green.mif.pg.gda.pl>
-
-- Documented "scsihosts=" boot parameter
-
-- Print process command when debugging kerneld/kmod
-
-- Added debugging for register/unregister/change operations
-
-- Added "devfs=" boot options
-
-- Hide unregistered entries by default
-===============================================================================
-Changes for patch v28
-
-- No longer lock/unlock superblock in <devfs_put_super> (cope with
-  recent VFS interface change)
-
-- Do not automatically change ownership/protection of /dev/tty
-
-- Drop negative dentries when they are released
-
-- Manage dcache more efficiently
-===============================================================================
-Changes for patch v29
-
-- Added DEVFS_FL_AUTO_DEVNUM flag
-===============================================================================
-Changes for patch v30
-
-- No longer set unnecessary methods
-
-- Ported to kernel 2.1.99-pre3
-===============================================================================
-Changes for patch v31
-
-- Added PID display to <call_kerneld> debugging message
-
-- Added "diread" and "diwrite" options
-
-- Ported to kernel 2.1.102
-
-- Fixed persistence problem with permissions
-===============================================================================
-Changes for patch v32
-
-- Fixed devfs support in drivers/block/md.c
-===============================================================================
-Changes for patch v33
-
-- Support legacy device nodes
-
-- Fixed bug where recreated inodes were hidden
-
-- New IDE naming scheme: everything is under /dev/ide
-===============================================================================
-Changes for patch v34
-
-- Improved debugging in <get_vfs_inode>
-
-- Prevent duplicate calls to <devfs_mk_dir> in SCSI layer
-
-- No longer free old dentries in <devfs_mk_dir>
-
-- Free all dentries for a given entry when deleting inodes
-===============================================================================
-Changes for patch v35
-
-- Ported to kernel 2.1.105 (sound driver changes)
-===============================================================================
-Changes for patch v36
-
-- Fixed sound driver port
-===============================================================================
-Changes for patch v37
-
-- Minor documentation tweaks
-===============================================================================
-Changes for patch v38
-
-- More documentation tweaks
-
-- Fix for sound driver port
-
-- Removed ttyname-patch (grab libc 5.4.44 instead)
-
-- Ported to kernel 2.1.107-pre2 (loop driver fix)
-===============================================================================
-Changes for patch v39
-
-- Ported to kernel 2.1.107 (hd.c hunk broke due to spelling "fixes"). Sigh
-
-- Removed many #ifdef's, replaced with trickery in include/devfs_fs.h
-===============================================================================
-Changes for patch v40
-
-- Fix for sound driver port
-
-- Limit auto-device numbering to majors 128 to 239
-===============================================================================
-Changes for patch v41
-
-- Fixed inode times persistence problem
-===============================================================================
-Changes for patch v42
-
-- Ported to kernel 2.1.108 (drivers/scsi/hosts.c hunk broke)
-===============================================================================
-Changes for patch v43
-
-- Fixed spelling in <devfs_readlink> debug
-
-- Fixed bug in <devfs_setup> parsing "dilookup"
-
-- More #ifdef's removed
-
-- Supported Sparc keyboard (/dev/kbd)
-
-- Supported DSP56001 digital signal processor (/dev/dsp56k)
-
-- Supported Apple Desktop Bus (/dev/adb)
-
-- Supported Coda network file system (/dev/cfs*)
-===============================================================================
-Changes for patch v44
-
-- Fixed devfs inode leak when manually recreating inodes
-
-- Fixed permission persistence problem when recreating inodes
-===============================================================================
-Changes for patch v45
-
-- Ported to kernel 2.1.110
-===============================================================================
-Changes for patch v46
-
-- Ported to kernel 2.1.112-pre1
-
-- Removed harmless "unused variable" compiler warning
-
-- Fixed modes for manually recreated device nodes
-===============================================================================
-Changes for patch v47
-
-- Added NULL devfs inode warning in <devfs_read_inode>
-
-- Force all inode nlink values to 1
-===============================================================================
-Changes for patch v48
-
-- Added "dimknod" option
-
-- Set inode nlink to 0 when freeing dentries
-
-- Added support for virtual console capture devices (/dev/vcs*)
-  Thanks to Dennis Hou <smilax@mindmeld.yi.org>
-
-- Fixed modes for manually recreated symlinks
-===============================================================================
-Changes for patch v49
-
-- Ported to kernel 2.1.113
-===============================================================================
-Changes for patch v50
-
-- Fixed bugs in recreated directories and symlinks
-===============================================================================
-Changes for patch v51
-
-- Improved robustness of rc.devfs script
-  Thanks to Roderich Schupp <rsch@experteam.de>
-
-- Fixed bugs in recreated device nodes
-
-- Fixed bug in currently unused <devfs_get_handle_from_inode>
-
-- Defined new <devfs_handle_t> type
-
-- Improved debugging when getting entries
-
-- Fixed bug where directories could be emptied
-
-- Ported to kernel 2.1.115
-===============================================================================
-Changes for patch v52
-
-- Replaced dummy .epoch inode with .devfsd character device
-
-- Modified rc.devfs to take account of above change
-
-- Removed spurious driver warning messages when CONFIG_DEVFS_FS=n
-
-- Implemented devfsd protocol revision 0
-===============================================================================
-Changes for patch v53
-
-- Ported to kernel 2.1.116 (kmod change broke hunk)
-
-- Updated Documentation/Configure.help
-
-- Test and tty pattern patch for rc.devfs script
-  Thanks to Roderich Schupp <rsch@experteam.de>
-
-- Added soothing message to warning in <devfs_d_iput>
-===============================================================================
-Changes for patch v54
-
-- Ported to kernel 2.1.117
-
-- Fixed default permissions in sound driver
-
-- Added support for frame buffer devices (/dev/fb*)
-===============================================================================
-Changes for patch v55
-
-- Ported to kernel 2.1.119
-
-- Use GCC extensions for structure initialisations
-
-- Implemented async open notification
-
-- Incremented devfsd protocol revision to 1
-===============================================================================
-Changes for patch v56
-
-- Ported to kernel 2.1.120-pre3
-
-- Moved async open notification to end of <devfs_open>
-===============================================================================
-Changes for patch v57
-
-- Ported to kernel 2.1.121
-
-- Prepended "/dev/" to module load request
-
-- Renamed <call_kerneld> to <call_kmod>
-
-- Created sample modules.conf file
-===============================================================================
-Changes for patch v58
-
-- Fixed typo "AYSNC" -> "ASYNC"
-===============================================================================
-Changes for patch v59
-
-- Added open flag for files
-===============================================================================
-Changes for patch v60
-
-- Ported to kernel 2.1.123-pre2
-===============================================================================
-Changes for patch v61
-
-- Set i_blocks=0 and i_blksize=1024 in <devfs_read_inode>
-===============================================================================
-Changes for patch v62
-
-- Ported to kernel 2.1.123
-===============================================================================
-Changes for patch v63
-
-- Ported to kernel 2.1.124-pre2
-===============================================================================
-Changes for patch v64
-
-- Fixed Unix98 pty support
-
-- Increased buffer size in <get_partition_list> to avoid crash and
-  burn
-===============================================================================
-Changes for patch v65
-
-- More Unix98 pty support fixes
-
-- Added test for empty <<name>> in <devfs_find_handle>
-
-- Renamed <generate_path> to <devfs_generate_path> and published
-
-- Created /dev/root symlink
-  Thanks to Roderich Schupp <rsch@ExperTeam.de>
-  with further modifications by me
-===============================================================================
-Changes for patch v66
-
-- Yet more Unix98 pty support fixes (now tested)
-
-- Created <devfs_get_fops>
-
-- Support media change checks when CONFIG_DEVFS_ONLY=y
-
-- Abolished Unix98-style PTY names for old PTY devices
-===============================================================================
-Changes for patch v67
-
-- Added inline declaration for dummy <devfs_generate_path>
-
-- Removed spurious "unable to register... in devfs" messages when
-  CONFIG_DEVFS_FS=n
-
-- Fixed misc. devices when CONFIG_DEVFS_FS=n
-
-- Limit auto-device numbering to majors 144 to 239
-===============================================================================
-Changes for patch v68
-
-- Hide unopened virtual consoles from directory listings
-
-- Added support for video capture devices
-
-- Ported to kernel 2.1.125
-===============================================================================
-Changes for patch v69
-
-- Fix for CONFIG_VT=n
-===============================================================================
-Changes for patch v70
-
-- Added support for non-OSS/Free sound cards
-===============================================================================
-Changes for patch v71
-
-- Ported to kernel 2.1.126-pre2
-===============================================================================
-Changes for patch v72
-
-- #ifdef's for CONFIG_DEVFS_DISABLE_OLD_NAMES removed
-===============================================================================
-Changes for patch v73
-
-- CONFIG_DEVFS_DISABLE_OLD_NAMES replaced with "nocompat" boot option
-
-- CONFIG_DEVFS_BOOT_OPTIONS removed: boot options always available
-===============================================================================
-Changes for patch v74
-
-- Removed CONFIG_DEVFS_MOUNT and "mount" boot option and replaced with
-  "nomount" boot option
-
-- Documentation updates
-
-- Updated sample modules.conf
-===============================================================================
-Changes for patch v75
-
-- Updated sample modules.conf
-
-- Remount devfs after initrd finishes
-
-- Ported to kernel 2.1.127
-
-- Added support for ISDN
-  Thanks to Christophe Leroy <christophe.leroy5@capway.com>
-===============================================================================
-Changes for patch v76
-
-- Updated an email address in ChangeLog
-
-- CONFIG_DEVFS_ONLY replaced with "only" boot option
-===============================================================================
-Changes for patch v77
-
-- Added DEVFS_FL_REMOVABLE flag
-
-- Check for disc change when listing directories with removable media
-  devices
-
-- Use DEVFS_FL_REMOVABLE in sd.c
-
-- Ported to kernel 2.1.128
-===============================================================================
-Changes for patch v78
-
-- Only call <scan_dir_for_removable> on first call to <devfs_readdir>
-
-- Ported to kernel 2.1.129-pre5
-
-- ISDN support improvements
-  Thanks to Christophe Leroy <christophe.leroy5@capway.com>
-===============================================================================
-Changes for patch v79
-
-- Ported to kernel 2.1.130
-
-- Renamed miscdevice "apm" to "apm_bios" to be consistent with
-  devices.txt
-===============================================================================
-Changes for patch v80
-
-- Ported to kernel 2.1.131
-
-- Updated <devfs_rmdir> for VFS change in 2.1.131
-===============================================================================
-Changes for patch v81
-
-- Fixed permissions on /dev/ptmx
-===============================================================================
-Changes for patch v82
-
-- Ported to kernel 2.1.132-pre4
-
-- Changed initial permissions on /dev/pts/*
-
-- Created <devfs_mk_compat>
-
-- Added "symlinks" boot option
-
-- Changed devfs_register_blkdev() back to register_blkdev() for IDE
-
-- Check for partitions on removable media in <devfs_lookup>
-===============================================================================
-Changes for patch v83
-
-- Fixed support for ramdisc when using string-based root FS name
-
-- Ported to kernel 2.2.0-pre1
-===============================================================================
-Changes for patch v84
-
-- Ported to kernel 2.2.0-pre7
-===============================================================================
-Changes for patch v85
-
-- Compile fixes for driver/sound/sound_common.c (non-module) and
-  drivers/isdn/isdn_common.c
-  Thanks to Christophe Leroy <christophe.leroy5@capway.com>
-
-- Added support for registering regular files
-
-- Created <devfs_set_file_size>
-
-- Added /dev/cpu/mtrr as an alternative interface to /proc/mtrr
-
-- Update devfs inodes from entries if not changed through FS
-===============================================================================
-Changes for patch v86
-
-- Ported to kernel 2.2.0-pre9
-===============================================================================
-Changes for patch v87
-
-- Fixed bug when mounting non-devfs devices in a devfs
-===============================================================================
-Changes for patch v88
-
-- Fixed <devfs_fill_file> to only initialise temporary inodes
-
-- Trap for NULL fops in <devfs_register>
-
-- Return -ENODEV in <devfs_fill_file> for non-driver inodes
-
-- Fixed bug when unswapping non-devfs devices in a devfs
-===============================================================================
-Changes for patch v89
-
-- Switched to C data types in include/linux/devfs_fs.h
-
-- Switched from PATH_MAX to DEVFS_PATHLEN
-
-- Updated Documentation/filesystems/devfs/modules.conf to take account
-  of reverse scanning (!) by modprobe
-
-- Ported to kernel 2.2.0
-===============================================================================
-Changes for patch v90
-
-- CONFIG_DEVFS_DISABLE_OLD_TTY_NAMES replaced with "nottycompat" boot
-  option
-
-- CONFIG_DEVFS_TTY_COMPAT removed: existing "symlinks" boot option now
-  controls this. This means you must have libc 5.4.44 or later, or a
-  recent version of libc 6 if you use the "symlinks" option
-===============================================================================
-Changes for patch v91
-
-- Switch from <devfs_mk_symlink> to <devfs_mk_compat> in
-  drivers/char/vc_screen.c to fix problems with Midnight Commander
-===============================================================================
-Changes for patch v92
-
-- Ported to kernel 2.2.2-pre5
-===============================================================================
-Changes for patch v93
-
-- Modified <sd_name> in drivers/scsi/sd.c to cope with devices that
-  don't exist (which happens with new RAID autostart code printk()s)
-===============================================================================
-Changes for patch v94
-
-- Fixed bug in joystick driver: only first joystick was registered
-===============================================================================
-Changes for patch v95
-
-- Fixed another bug in joystick driver
-
-- Fixed <devfsd_read> to not overrun event buffer
-===============================================================================
-Changes for patch v96
-
-- Ported to kernel 2.2.5-2
-
-- Created <devfs_auto_unregister>
-
-- Fixed bugs: compatibility entries were not unregistered for:
-    loop driver
-    floppy driver
-    RAMDISC driver
-    IDE tape driver
-    SCSI CD-ROM driver
-    SCSI HDD driver
-===============================================================================
-Changes for patch v97
-
-- Fixed bugs: compatibility entries were not unregistered for:
-    ALSA sound driver
-    partitions in generic disc driver
-
-- Don't return unregistred entries in <devfs_find_handle>
-
-- Panic in <devfs_unregister> if entry unregistered
-
-- Don't panic in <devfs_auto_unregister> for duplicates
-===============================================================================
-Changes for patch v98
-
-- Don't unregister already unregistered entries in <unregister>
-
-- Register entry in <sd_detect>
-
-- Unregister entry in <sd_detach>
-
-- Changed to <devfs_*register_chrdev> in drivers/char/tty_io.c
-
-- Ported to kernel 2.2.7
-===============================================================================
-Changes for patch v99
-
-- Ported to kernel 2.2.8
-
-- Fixed bug in drivers/scsi/sd.c when >16 SCSI discs
-
-- Disable warning messages when unable to read partition table for
-  removable media
-===============================================================================
-Changes for patch v100
-
-- Ported to kernel 2.3.1-pre5
-
-- Added "oops-on-panic" boot option
-
-- Improved debugging in <devfs_register> and <devfs_unregister>
-
-- Register entry in <sr_detect>
-
-- Unregister entry in <sr_detach>
-
-- Register entry in <sg_detect>
-
-- Unregister entry in <sg_detach>
-
-- Added support for ALSA drivers
-===============================================================================
-Changes for patch v101
-
-- Ported to kernel 2.3.2
-===============================================================================
-Changes for patch v102
-
-- Update serial driver to register PCMCIA entries
-  Thanks to Roch-Alexandre Nomine-Beguin <roch@samarkand.infini.fr>
-
-- Updated an email address in ChangeLog
-
-- Hide virtual console capture entries from directory listings when
-  corresponding console device is not open
-===============================================================================
-Changes for patch v103
-
-- Ported to kernel 2.3.3
-===============================================================================
-Changes for patch v104
-
-- Added documentation for some functions
-
-- Added "doc" target to fs/devfs/Makefile
-
-- Added "v4l" directory for video4linux devices
-
-- Replaced call to <devfs_unregister> in <sd_detach> with call to
-  <devfs_register_partitions>
-
-- Moved registration for sr and sg drivers from detect() to attach()
-  methods
-
-- Register entries in <st_attach> and unregister in <st_detach>
-
-- Work around IDE driver treating CD-ROM as gendisk
-
-- Use <sed> instead of <tr> in rc.devfs
-
-- Updated ToDo list
-
-- Removed "oops-on-panic" boot option: now always Oops
-===============================================================================
-Changes for patch v105
-
-- Unregister SCSI host from <scsi_host_no_list> in <scsi_unregister>
-  Thanks to Zoltán Böszörményi <zboszor@mail.externet.hu>
-
-- Don't save /dev/log in rc.devfs
-
-- Ported to kernel 2.3.4-pre1
-===============================================================================
-Changes for patch v106
-
-- Fixed silly typo in drivers/scsi/st.c
-
-- Improved debugging in <devfs_register>
-===============================================================================
-Changes for patch v107
-
-- Added "diunlink" and "nokmod" boot options
-
-- Removed superfluous warning message in <devfs_d_iput>
-===============================================================================
-Changes for patch v108
-
-- Remove entries when unloading sound module
-===============================================================================
-Changes for patch v109
-
-- Ported to kernel 2.3.6-pre2
-===============================================================================
-Changes for patch v110
-
-- Took account of change to <d_alloc_root>
-===============================================================================
-Changes for patch v111
-
-- Created separate event queue for each mounted devfs
-
-- Removed <devfs_invalidate_dcache>
-
-- Created new ioctl()s for devfsd
-
-- Incremented devfsd protocol revision to 3
-
-- Fixed bug when re-creating directories: contents were lost
-
-- Block access to inodes until devfsd updates permissions
-===============================================================================
-Changes for patch v112
-
-- Modified patch so it applies against 2.3.5 and 2.3.6
-
-- Updated an email address in ChangeLog
-
-- Do not automatically change ownership/protection of /dev/tty<n>
-
-- Updated sample modules.conf
-
-- Switched to sending process uid/gid to devfsd
-
-- Renamed <call_kmod> to <try_modload>
-
-- Added DEVFSD_NOTIFY_LOOKUP event
-
-- Added DEVFSD_NOTIFY_CHANGE event
-
-- Added DEVFSD_NOTIFY_CREATE event
-
-- Incremented devfsd protocol revision to 4
-
-- Moved kernel-specific stuff to include/linux/devfs_fs_kernel.h
-===============================================================================
-Changes for patch v113
-
-- Ported to kernel 2.3.9
-
-- Restricted permissions on some block devices
-===============================================================================
-Changes for patch v114
-
-- Added support for /dev/netlink
-  Thanks to Dennis Hou <smilax@mindmeld.yi.org>
-
-- Return EISDIR rather than EINVAL for read(2) on directories
-
-- Ported to kernel 2.3.10
-===============================================================================
-Changes for patch v115
-
-- Added support for all remaining character devices
-  Thanks to Dennis Hou <smilax@mindmeld.yi.org>
-
-- Cleaned up netlink support
-===============================================================================
-Changes for patch v116
-
-- Added support for /dev/parport%d
-  Thanks to Tim Waugh <tim@cyberelk.demon.co.uk>
-
-- Fixed parallel port ATAPI tape driver
-
-- Fixed Atari SLM laser printer driver
-===============================================================================
-Changes for patch v117
-
-- Added support for COSA card
-  Thanks to Dennis Hou <smilax@mindmeld.yi.org>
-
-- Fixed drivers/char/ppdev.c: missing #include <linux/init.h>
-
-- Fixed drivers/char/ftape/zftape/zftape-init.c
-  Thanks to Vladimir Popov <mashgrad@usa.net>
-===============================================================================
-Changes for patch v118
-
-- Ported to kernel 2.3.15-pre3
-
-- Fixed bug in loop driver
-
-- Unregister /dev/lp%d entries in drivers/cha